Parallel plates form a solar collector that covers a roof, as shown in the figure. The plates are maintained at 15°C while ambient air at 10°C flows over the roof with V = 2m/s. Determine the rate of convective heat loss from a) the first plate and b) the third plate. c) if the wind velocity, V = 4 m/s calculate the rate of convective heat loss for the first and third plate.

Parallel plates form a solar collector that covers a roof, as shown in the figure. The plates are maintained at 15°C while ambient air at 10°C flows over the roof with V = 2m/s. Determine the rate of convective heat loss from a) the first plate and b) the third plate. c) if the wind velocity, V = 4 m/s calculate the rate of convective heat loss for the first and third plate.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.32P

See similar textbooks

Related questions

Q: A can of soft drink at a temperature of 4 deg C is taken from a refrigerator into a room where the…

A: The temperature of the can is .The temperature of room is .The relative humidity is .

Q: The bent rod is supported as shown in (Figure 1) by a smooth surface at B and by a collar at A,…

A: Given data: F = 130 lbM = 300 lb.ftDetermine:The magnitude of the reaction force on the rod at B.The…

Q: 1. The uniform slender rod in Figure Il-1 weighs 96.6 kand is supported on knife edges at A and B.…

Q: A solid uniform brick is placed on a sheet of wood. When one end of the sheet is raised (see…

A: Data given - Theta = 49.6° w= ?

Q: THE SYSTEM SHOWN BELOW IS IN EQUILIBRIUM IF THE WEIGHT OF B IS 48 NEWTON CALCULATE THE WEIGHT OF A,…

Q: maximum shear force

A: To find maximum shear force

Q: You are designing a new engine; this device operates with liquid fuel as an input and gener energy…

A: Hello. Since you have posted multiple questions we will solve the first question for you. If you…

Q: · For the frame and loading shown, determine the reactions at A and D, and the force at pin B (Note…

Q: Identify an enginecring problem and apply principles of engineering economy to find the solution.

A: Principle of Engineering economy: Engineering economy is the science of applying economic criteria…

Q: A standard 0.505-in.-diameter tensile bar was machined to a 2.00-in.-gage length from copper-nickel…

A: As per our guidelines we are supposed to solve only 3 subparts if multiple subparts are asked .…

Q: (b) 1489.5m³ (C) 128

A: given:bore diameter d=68mmstroke length l=75mm

Q: (4) 8.8.8.8 16 8 8 16 21

A: the question is not fully asked bricks and blocks are given

Q: Determine the moments of inertia of the shaded area about the x- and y-axes. Answers: 04 94

Q: The figure below shows a vapor power cycle that provides process heat and produces power. The steam…

Q: An engine has four cylinders of 68 mm bore and 75 mm stroke. The cubic capacity of the engine is (a)…

Q: 13378.2898 lbm to lbf

Q: Similar to the question in Part A, a hollow cylindrical 4130 steel tube has a 25 mm outside…

A: The diameter of steel tube, D = 25 mmThe wall thickness, t = 5 mmThe length, L = 900 mmThe load…

Q: to the muscle if the pisden diometer is Assume Lannar flow -erigmhine. A needle hai Maide diametkr…

A: Given :- Needle diameter (d2)=0.3 mm Length(L) = 60mm piston diameter(d1) = 5 mm Length(L)= 50 mm…

Q: 1. The weight of a car is distributed on its wheels as shown below. If the weight of the truck is 27…

A: Calculated the distance, d from point B to the back wheel of the car.

Q: a) Given is a penstock with deflection and subsequent cross-section reduction. Determine the…

A: Find the pressure loss.

Q: 6 m 6 m 4 m A

Q: Buppose that A-00 KN. (Foure 1) Figure -20AN 10 1 of 1 Part A Determine the magnitude of the…

Q: 20. Using the fundamental equations of moist air processes, determine the relative humidity of moist…

A: We are suppose to solve only one question. Please post other question as a separate question.

Q: A schematic of a combined refrigeration cycle and a portion of a steam power cycle is shown in the…

A: m_3 = 3[kg/s] P[1] = 5000[kPa]T[1] = 350[C] P[2] = 2000[kPa]T[2] = 250[C] P[3] = 200[kPa]x[3] =…

Q: The deflection of a structural beam of constant cross section subjected to a transverse loading is…

A: It is asked to explain the reason for the possibility of M=EId2νdx2 to generate a solution for the…

Q: Determine and yyfor the xy ases that passes through the centroid of the unequal angle shown. The…

A: Draw a diagram for the problem. Since rectangles are symmetrical about the x-axis and about the…

Q: A damped spring-mass system is subjected to a force F(t) = 10 cos(3 t) N. The system has the…

A: As per the company policy, we are restricted to solve only first three subpart of one question.…

Q: The Hardness It can be shown that the surface area of the impression is: D2-d2 2

Q: 15 kip-ft Given are the following data in the figure. Determine what statement is correct if G is 12…

Q: A measurement device is constructed from two (identical) uniform bars, welded together at right…

A: 1. Moment of inertia of the welded bar about pivoted point O,

Q: Thermodynamic Keys Second Law 96. A gas flows through a one-inlet, one-exit control volume operating…

Q: Current Attempt in Progress Determine the y-coordinate of the centroid of the shaded area shown. 10…

A: The figure is shown above.

Q: Determine the moment of inertia of the cross-sectional area of the reinforced channel about the…

Q: Imagine the linkage shown in figure 1 will be used in an automatic sliding door opening mechanism…

A: Given:Angular velocity of link AB = 4 rad/sLength of link AB, LAB = 500 mm = 0.5 mLength of link BC,…

Q: F6-8. Determine the force in members LK, KC, and CD of the Pratt truss. State if the members are in…

Q: 10 KN 20 KN / m 5 KN / m A SIMPLE STRESSES 5 KN / m 50 KN-m 5 KN / m 2. Points C and D of the 1.00…

Q: 04%, respectively. The the fuel entering the e e power: (b) friction

Q: P9-1 D The steel rod (E= 200GPA) is subjected to the loading shown. If the cross-sectional area of…

Q: The device shown in figure below can be analyzed as a pin-jointed fourbar mechanism in parallel with…

A: Given:The diagram of the mechanism and dimensions of links are given below;The angle made by the…

Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

Problem 1:
Parallel plates form a solar collector that covers a roof, as shown in the figure. The plates are maintained at 15°C while
ambient air at 10°C flows over the roof with V = 2m/s. Determine the rate of convective heat loss from a) the first plate
and b) the third plate. c) if the wind velocity, V = 4 m/s calculate the rate of convective heat loss for the first and third
plate.
4 m
1 m
V.T

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Finding film temperature, and critical length

Step 2: part a

Step 3: part b

Step 4: part c

Solution

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 83 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Air at a temperature of 27°C (P = 1 atm) and a velocity of 12.7 m/sec flows over the top of a flat mold in order to cool it down (assume this is a flat plate). The mold has dimensions of 1.5 m wide by 0.45 m long (the 0.45 meters dimension is in the direction of the air flow); and is at a temperature of 127°C. a) Find the heat transfer rate from the mold to the air (q). b) Calculate the drag force on the mold due to the air flow.
Draw a fbd Make assumptions
Question :- A chimney of 16 m high is used for discharging maximum exhaust gases. (i) Find the draught produced by the chimney in mm of water. (ii) If the maximum temperature of the gases available is 350 degrees * C find the mass of air supplied per kg of fuel if the discharge mass is maximum. The atmospheric temperature = 20°C.
Q10) A1.8 m-diameter spherical tank of negligible thickness contains iced water at 0ºC. Air at 25°C flows over the tank with a velocity of 7 m/s. Determine the rate of heat transfer to the tank. oun
5. Suppose that a vertical column of the atmosphere is initially isothermal from 90 to 50 kPa. The geostrophic wind is 10 ms¹ from the south at 90 kPa, 10 ms -¹ from the west at 70 kPa, and 20 ms-¹ from the west 50 kPa. Calculate the mean horizontal temperature gradients in the two layers 90-70kPa and 70-50kPa. Compute the rate of advective temperature change in each layer. How long would this advection pattern have to persist in order to establish a dry adiabatic lapse rate between 60 and 80 kPa? (Assume that the lapse rate is constant from 90-50kPa and that the 80-60 kPa layer thickness is 2.25 km. You may also assume that f = 10-4s¹ and, if necessary, p = 1kg/m³.) [Holton 3.12]
Provide schematic diagram and solutions.
You are designing an IC heatsink which uses round pins in cross-flow. The heatsink must dissipate 3000W. The heatsink has 10 rows of 8 columns of round pins with a diameter of 1mm. The pins have longitudinal and transverse pitch of 6mm. The incoming air is at 25oC with a velocity of 3 m/s. Assume fluid properties are constant. If the pins are arranged in-line: a) Find the Reynold’s Number b) Find the Nusselt Number c) If the pins are 30mm tall, how hot must the pin surface be (average) to dissipate the proper amount of heat?
Solve for the latent heat of water at Tw = 28C(and. λw = 2435 kJ/kg)
the title of the book: Engineering Thermofluids Thermodynamics, Fluid Mechanics, and Heat Transfer by: Mahmoud Massoud
TUTORIAL SHEET - 3 1- How much is used/kg of coal burnt in a boiler having chimney of 35 m height to create a draught of 20 mm of water, when the temperature of flue gas in the chimney is 370°C and the boiler house temperature is 34°C. Does this chimney satisfy the condition of maximum discharge? Answers: 18.683 kg of air/kg of coal, W = 21.172 2- Calculate the mass of flue gases flowing through the chimney when draught produced is equal to 1.9 cm of water. Temperature of flue gases is 290° C and the ambient temperature is 20° C. The flue gases formed per kg of fuel burnt are 23 kg. Neglect the losses and take the diameter of chimney as 1.8 m. Answers: H= 34.67 m , H1 == 29.05 m of air, mg = 39.8 kg/s 3- A boiler generates 2400 kg of dry steam per hour at a pressure of 11 bar the grate area is 3 m2, and 90 kg of coal is burnt per m2 of grate area per hour. The calorific value of coal is 33180 kJ/kg and the temperature of feed water is 17.5° C. Determine (i) Actual evaporation per kg of…
Water at a temperature of 20 oC with a mass flow rate of 0.015 kg/s enters the pipe 2.5 cm in diameter with a uniform surface temperature of 90 oC. a) Determine the length of the thermal inlet region, Lt.b) If it is assumed that the flow is hydrodynamically and thermally formed, calculate the convection heat transfer coefficient and the length of the pipe required to heat the water to 70 oC.c) What is the rate of heat transfer to the water?d) Calculate the friction factor and pressure drop.
You are designing an enclosure which houses a PCB. Mounted outside the enclosure on its top is a set of aluminum fins, as seen in the sketch below. The enclosure (and fins) are 150mm deep long. There is no forced airflow. Neglect the thickness of the enclosure walls. Neglect heat transfer out of the sides and bottom of the enclosure. If the PCB produces 4000 W/m2: a) Most industrial-grade ICs have a maximum temperature of 85oC. If you must keep your PCB below this what is the maximum thermal resistance from the PCB to the air surrounding the fins? Assume the air around the fins stays at room temperature. b) If the top of the enclosure (and bottom of the fin base) runs at 50°?, what is the effective thermal conductivity above the PCB? Hint: Because the air inside the enclosure is trapped and heats up, any air properties NOT given below are calculated at the average air temperature (T1+T2)/2. c) What is the temperature at the base of the fins? d) What is the efficiency of the fins? e)…